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Influence of laser surface remelting on Al-Si alloy properties
Sušnik, Janez (Author), Šturm, Roman (Author), Grum, Janez (Author)

URLURL - Presentation file, Visit http://www.dlib.si/details/URN:NBN:SI:doc-N2UI9IX2 This link opens in a new window

Abstract
The paper treats Al-Si alloy after laser surface remelting by the changes in microstructure and micro-hardness of a modified surface layer. Laser remelting of the thin surface layer was carried out with different energy inputs into the as-cast specimen surface. The remelting conditions were varied by application of different laser beam pulse duration. After solidification of surface remelted layer a fine-grained microstructure is formed. Such a microstructure increases micro-hardness of Al-Si alloy by about 60 to 80%. The variation and size of mainly tensile residual stresses in surface remelted layer greatly depends on the cooling rates i.e. laser pulse duration. Precipitation annealing after the process of laser surface remelting additionally influences the reduction of residual stresses.

Language:English
Keywords:Al-Si alloys, laser surface remelting, residual stresses, microhardeness, precipitation annealing
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Year:2012
Publisher:= Association of Mechanical Engineers and Technicians of Slovenia et al.
Number of pages:str. 614-620, SI 123
Numbering:Vol. 58, no. 10
UDC:620.1/.2:669.715
ISSN on article:0039-2480
DOI:10.5545/sv-jme.2012.696 Link is opened in a new window
COBISS.SI-ID:12493339 Link is opened in a new window
Views:876
Downloads:243
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [et al.], = Association of Mechanical Engineers and Technicians of Slovenia [et al.]
ISSN:0039-2480
COBISS.SI-ID:762116 This link opens in a new window

Secondary language

Language:Slovenian
Title:Vpliv parametrov laserskega površinskega pretaljevanja na lastnosti Al-Si zlitine
Keywords:Al-Si zlitine, lasersko površinsko pretaljevanje, zaostale napetosti, mikrotrdota, precipitacijsko izločanje

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